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/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Bismarck, ND., USA
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
*
**************************************************************************/
/*
* Authors:
* Keith Whitwell
*/
#include "pipe/p_compiler.h"
#include "util/u_debug.h"
#include "target-helpers/wrap_screen.h"
#include "state_tracker/xlib_sw_winsys.h"
#include "xm_public.h"
#include "state_tracker/st_api.h"
#include "state_tracker/st_gl_api.h"
/* piggy back on this libGL for OpenGL support in EGL */
struct st_api *
st_api_create_OpenGL()
{
return st_gl_api_create();
}
/* Helper function to choose and instantiate one of the software rasterizers:
* cell, llvmpipe, softpipe.
*
* This function could be shared, but currently causes headaches for
* the build systems, particularly scons if we try. Long term, want
* to avoid having global #defines for things like GALLIUM_LLVMPIPE,
* GALLIUM_CELL, etc. Scons already eliminates those #defines, so
* things that are painful for it now are likely to be painful for
* other build systems in the future.
*
* Copies (full or partial):
* targets/libgl-xlib
* targets/graw-xlib
* targets/dri-swrast
* winsys/sw/drm
* drivers/sw
*
*/
#ifdef GALLIUM_SOFTPIPE
#include "softpipe/sp_public.h"
#endif
#ifdef GALLIUM_LLVMPIPE
#include "llvmpipe/lp_public.h"
#endif
#ifdef GALLIUM_CELL
#include "cell/ppu/cell_public.h"
#endif
#ifdef GALLIUM_GALAHAD
#include "galahad/glhd_public.h"
#endif
static struct pipe_screen *
swrast_create_screen(struct sw_winsys *winsys)
{
const char *default_driver;
const char *driver;
struct pipe_screen *screen = NULL;
#if defined(GALLIUM_CELL)
default_driver = "cell";
#elif defined(GALLIUM_LLVMPIPE)
default_driver = "llvmpipe";
#elif defined(GALLIUM_SOFTPIPE)
default_driver = "softpipe";
#else
default_driver = "";
#endif
driver = debug_get_option("GALLIUM_DRIVER", default_driver);
#if defined(GALLIUM_CELL)
if (screen == NULL && strcmp(driver, "cell") == 0)
screen = cell_create_screen( winsys );
#endif
#if defined(GALLIUM_LLVMPIPE)
if (screen == NULL && strcmp(driver, "llvmpipe") == 0)
screen = llvmpipe_create_screen( winsys );
#endif
#if defined(GALLIUM_SOFTPIPE)
if (screen == NULL)
screen = softpipe_create_screen( winsys );
#endif
#if defined(GALLIUM_GALAHAD)
if (screen) {
struct pipe_screen *galahad_screen = galahad_screen_create(screen);
if (galahad_screen)
screen = galahad_screen;
}
#endif
return screen;
}
/* Helper function to build a subset of a driver stack consisting of
* one of the software rasterizers (cell, llvmpipe, softpipe) and the
* xlib winsys.
*/
static struct pipe_screen *
swrast_xlib_create_screen( Display *display )
{
struct sw_winsys *winsys;
struct pipe_screen *screen = NULL;
/* Create the underlying winsys, which performs presents to Xlib
* drawables:
*/
winsys = xlib_create_sw_winsys( display );
if (winsys == NULL)
return NULL;
/* Create a software rasterizer on top of that winsys:
*/
screen = swrast_create_screen( winsys );
if (screen == NULL)
goto fail;
/* Inject any wrapping layers we want to here:
*/
return gallium_wrap_screen( screen );
fail:
if (winsys)
winsys->destroy( winsys );
return NULL;
}
static struct xm_driver xlib_driver =
{
.create_pipe_screen = swrast_xlib_create_screen,
.create_st_api = st_gl_api_create,
};
/* Build the rendering stack.
*/
static void _init( void ) __attribute__((constructor));
static void _init( void )
{
/* Initialize the xlib libgl code, pass in the winsys:
*/
xmesa_set_driver( &xlib_driver );
}
/***********************************************************************
*
* Butt-ugly hack to convince the linker not to throw away public GL
* symbols (they are all referenced from getprocaddress, I guess).
*/
extern void (*linker_foo(const unsigned char *procName))();
extern void (*glXGetProcAddress(const unsigned char *procName))();
extern void (*linker_foo(const unsigned char *procName))()
{
return glXGetProcAddress(procName);
}
/**
* When GLX_INDIRECT_RENDERING is defined, some symbols are missing in
* libglapi.a. We need to define them here.
*/
#ifdef GLX_INDIRECT_RENDERING
#define GL_GLEXT_PROTOTYPES
#include "GL/gl.h"
#include "glapi/glapi.h"
#include "glapi/glapitable.h"
#include "glapi/glapidispatch.h"
#if defined(USE_MGL_NAMESPACE)
#define NAME(func) mgl##func
#else
#define NAME(func) gl##func
#endif
#define DISPATCH(FUNC, ARGS, MESSAGE) \
CALL_ ## FUNC(GET_DISPATCH(), ARGS);
#define RETURN_DISPATCH(FUNC, ARGS, MESSAGE) \
return CALL_ ## FUNC(GET_DISPATCH(), ARGS);
/* skip normal ones */
#define _GLAPI_SKIP_NORMAL_ENTRY_POINTS
#include "glapi/glapitemp.h"
#endif /* GLX_INDIRECT_RENDERING */
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